Electric percolator



ELECTRIC PERCOLATOR Filed June 4. 1926 Patented Feb. 21, 1928.

UNITED STATES PATENT OFFIQE.

WILLIAM S. I BREMER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO ST. LOUISALUMINUM COMPANY, A CORPORATION OF MISSOURI.

ELECTRIC PERCOLATOR.

Application filed June 4,

My invention relates to percolators for making coffee, and particularlyto that class ofpercolators known as electric percolators.

The primary object of my inventionis to provide a percolator of greaterefiiclency than has heretofore been produced, by 1ncreasing thesuperficial area through which the heat generated by the electricheating element is transmitted, without increasing the diameterandsuperficial area of the bottom of the. percolator.

A further object of my invention is to provide'a suitable ornamental.base, which is readily attachable and detachable from the body ofthepercolator either when in use or nonuse.

Other and further objects and advantages of my invention will beapparentfrom the specification, claims and drawings, in which:

Fig. 1 is a perspective viewof a complete percolator.

Fig. 2 is a vertical cross-section through the base and lower part of apercolator.

The conventional electric percolator con- 1 sists of a main body portiondesignated as 1, a base, designated as 2, a spout 3, a lid or cover 4,suitably hinged at 5, and a handle 6.

Internally percolators are provided with a verticall disposed hollowtube 7, open at both en s and provided intermediate of its ends with acollar, or externally protruding rib 8, which serves the purpose ofsupporting a cup, through the geometrical center of which the tube 7protrudes. The cup is made to substantially fit the interior of thepercolator, so that steam or hot water forced up through the tube 7drains back through the coflee held in the cup, the bottom and sides ofthe cup being perforated.

To the extent above-outlined the conventional percolator correspondswith my improved pe-rcolator. In the conventional percolator the heatingelementis disposed in the base of the percolator, which is integral withthe body thereof, hence when the per colator is being used to pour outcoffee, either the wire conductors must be lifted with the percolator,which is often troublesome and inconvenient, or they must be entirelydetached therefrom. Another disadvantage of the conventional percolatoris that if it is desired to make an artistic vessel such as is shown inFig. 1, the heating sur- 1926. Serial No. 113,700.

face would be greatly reduced. .Therefore,

in order to provide a heating surface of greater magnitude, i. e. thatwill heat a given quantity of water to a given temperature in theshortest space of time,'I have provided. a. structure as shown-in F ig.,2, \YlllCh in its general outline simulates. the

,whose sides are substantially parallel with the side walls of the disc9 and spaced apart therefrom.

The base 2 ofthe percolatorlis circular in form. 1 Around the marginaledge of the'top of thebase is a plane,gflatsurface, while the centralportion 11 protrudes upwardly forming a frustum'of a hollow cone, theouter walls of which; coincide 'l throughout and contact with: theouter-walls of the -similar hollow frustum constituting apart of thebottom-of the pe'rcolator. L F

- The heating element consists-of a conical core 12 of great, dielectricstrength, about wh ch is wound a plurality-0f turns of electricalconductors 13 having suitable: for minals designated as 14, by means ofwhich .contact is madewith any convenientsource of electric current; a a

The heating element thus deseribedis an independent unit and serves thepurpose-of heating the water and causing it to flow upwardly through thetube 7 and .drain through the Eoifee into the body of the percolator.

Around the base of the conical core 12 an additional core 15 in the formof an annular ring is horizontally disposed adjacent the top of thebase, about which is wound a plurality of turns of electrical conductorwire 16, having a suitable terminal desig nated at 17.

The purpose of this element is twofold. First, it acts jointly with theconical heatlng element to raise the temperature of the water at thebeginning of the operation; and, second, when the coffee has reached sufficient strength by means of the percolating element, the percolatingelement is cut off 157'afitabhd-to the detachable base, so that when"-ithe percolator iis "moved-or lifted as when serving'edfieeforiorany'o'theii purpose, the percolator is simply lifted up as if it wasis'ettingfree npont-hetable, leaving the base and'eonduetor wires-undistu rbed.

"It is obViousthat in-"the eventthat the. baseior heating -elementbecomes inoperative {af dack (if-current, orotherwise,-'the main bodywf--the percc'ilator could be used in the 4 z5 same rnanner =as theconventional non-electric -'p e reo'lator either on a-coal'or wood-stoveor upona gas=f jet, withoutdanger of deiistructi'onz or injuryy It isequally evident that if the heating element was-built integnal with'the=body :po'rtiojn ct the percola- =-f tor,'l its' else-"as a conventionalnon-electric i zperealater Rwmifd --'dest-roy the heat-ing ele- "U cut;

Itkis, therefore, evidentthat I Ehave pro- 5 Y idueedinot onlyaa moreefficient -"percolator,

frbut one of greater utility a'nd ease of operartion; 1'. p

Having f-u'lly described my invention and its method of -eon'stru'ction,u'hat I claim as 40 -=new atid-usf-ul ariddesire to securebyLctterS-{Ba-tent is-:-

' Latineleetric'mercolamr of the class dc- -scribe'd,comprising a hollowcylindrical body closed at its lower 'erid by-a -bottom having itsperiphery disposed in a horizontal planc -an'd'its center protrudingupwardly and inwardly substantially in the form of the 'ffrus'tum ofa'hollow cone adaptedto"fit a base having a top (if like contour, anelectrically heated base the periphery of whose top hes in a horizontalplane and whose central portion extends upwardly in the form of the-frustrun1 of a cone'adapted to snugly fit into "the bottom of saidhollow cylindrical body,

electric heating elements disposed within the-topof said base and oflike contour, said heating elements consisting of two independentelements adapted to be heated simultaneously and separately, and .Ineansfor connecting said elements to a source of electric current, aseeond'heating element in said basc disposed about the periphery-of thetop thereof and in non-electrical Contact with 'the' first named heatingelement.

2. An electric pereolator of the class described, comprising incombination, a' 'b'o dy portion adapted 'to' hold -'liquids, having-itsbottom protruding inwardly and upwardly,

adetachable base electrically heated' by a plurality of heatingelements,having-the central portion of its top extend-ing upward- 1yadapted to fit into theupu ardly protrudmy; bottom ofsaid-bodyportionrthereby increasing the surface area-'of-sa-id"bottomandof said electrically'heated' base;

3. An electric perc0lator of the class-fle- -scribed, comprising a mainbody portion having the center of its bottdniyprotruding inwa rdly and=upwardly adapting} sai'd' bot tom to fit within the -lowerend ofa'l-tube of like contour vertically disposed'wvithin sa-id bodyportion,- an -electricaily} heatedJdetachable base comprisinga pluralityof heating elements -1-n non-electric contactwith each other. -oneofsaid elements exten dingup- -WILLIAM Si BREMER.

